Abstract
Indium antimonide (InSb) single crystals have been plastically deformed between −176 and 400 °C, i.e. below and above the brittle-to-ductile transition temperature situated around 150–160 °C, via the use of microindentation below room temperature (RT) and the Paterson press (compression under gaseous pressure) above RT. The evolution of the macroscopic mechanical data (hardness and critical resolved shear stress) with temperature suggests the existence of three deformation regimes with transitions at T tr1 = 150 °C and T tr2 = 20 °C. T tr1 coincides with the brittle-to-ductile temperature, while T tr2 may coincide with a transition in the nature of dislocations with dislocations propagating in the glide set above T tr2 while moving in the shuffle set below T tr2.
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